55213208 has 8 divisors (see below), whose sum is σ = 103524780. Its totient is φ = 27606600.

The previous prime is 55213199. The next prime is 55213211. The reversal of 55213208 is 80231255.

55213208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3450818 + ... + 3450833.

Almost surely, 2^55213208 is an apocalyptic number.

It is an amenable number.

55213208 is a deficient number, since it is larger than the sum of its proper divisors (48311572).

55213208 is a wasteful number, since it uses less digits than its factorization.

55213208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6901657 (or 6901653 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 55213208 is about 7430.5590637583. The cubic root of 55213208 is about 380.7860184531.

The spelling of 55213208 in words is "fifty-five million, two hundred thirteen thousand, two hundred eight".